15 OcT.^ 1919.] Poultry Feeding and Foodstuffs. 



603 



Ash or Mineral Ingredients. 



This consists of the residue left when the combustible part is burned 

 off. In plant ash the principal ingredients are lime, phosphoric acid 

 and potash. Maize and the gluten compounds are deficient in lime 

 salts, while bran is comparatively rich in phosphoric acid. 



Ash supplies the necessary ingredients for bone formation, and 

 assists in building up the tissues. The predominating salt in bones is 

 lime phosphate, while that in flesh is potassium phosphate. Ash also 

 supplies the essential substances in some of the digestive juices and in 

 the blood. 



Composition of Feeding Stuffs. 



Average Composition as Shown by Analysis. 



